Sound system tower



FIG. 1 is a top, front, left side perspective view of a sound system tower showing my new design;

FIG. 2 is front elevation view (the rear elevation is a mirror image);

FIG. 3 is a right side elevation view;

FIG. 4 is a left side elevation view;

FIG. 5 is a top plan view; and,

FIG. 6 is a bottom plan view.

The broken lines in FIG. 1 illustrate environment and forms no part of the claimed design. 

CLAIM The ornamental design for an sound system tower, as shown and described. 